Haavard Skinnemoen | 5f97f7f | 2006-09-25 23:32:13 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2004-2006 Atmel Corporation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | #include <linux/errno.h> |
| 9 | #include <linux/fs.h> |
| 10 | #include <linux/file.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/unistd.h> |
| 13 | |
| 14 | #include <asm/mman.h> |
| 15 | #include <asm/uaccess.h> |
| 16 | |
| 17 | asmlinkage int sys_pipe(unsigned long __user *filedes) |
| 18 | { |
| 19 | int fd[2]; |
| 20 | int error; |
| 21 | |
| 22 | error = do_pipe(fd); |
| 23 | if (!error) { |
| 24 | if (copy_to_user(filedes, fd, sizeof(fd))) |
| 25 | error = -EFAULT; |
| 26 | } |
| 27 | return error; |
| 28 | } |
| 29 | |
| 30 | asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, |
| 31 | unsigned long prot, unsigned long flags, |
| 32 | unsigned long fd, off_t offset) |
| 33 | { |
| 34 | int error = -EBADF; |
| 35 | struct file *file = NULL; |
| 36 | |
| 37 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); |
| 38 | if (!(flags & MAP_ANONYMOUS)) { |
| 39 | file = fget(fd); |
| 40 | if (!file) |
| 41 | return error; |
| 42 | } |
| 43 | |
| 44 | down_write(¤t->mm->mmap_sem); |
| 45 | error = do_mmap_pgoff(file, addr, len, prot, flags, offset); |
| 46 | up_write(¤t->mm->mmap_sem); |
| 47 | |
| 48 | if (file) |
| 49 | fput(file); |
| 50 | return error; |
| 51 | } |